Suction-box for paper-making machines.



B. D, COPPAGE. SUCTION BOX FOR PAPER MAKING MACHINES.

APPLICATION FILED MAR. H. 1915. 1,161,030. Patented Nov. 23, 1915. v v I I v v 1,1e1,oso.

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BENJAMIN DENVER COPPAGE, OF WILMINGTON, DELAWARE.

SUCTION-BOX FOR PAPER-MAKING MACHINES.

Specification of Letters Patent.

Patented Nov. 23, 1915.

Application filed March 11, 1915. Serial No. 13,642.

To all whom it may concern:

Be it known that I, BENJAMIN DENVER Corraon, a. resident of WVilmington, Delaware, (whose post-oiiice address is care of The Pusey & Jones C0, l/Vilmington, Dela,- ware,) have invented a new and useful Improvement in Suction-Boxes for Paper- Making Machines, which invention is fully set forth in the following specification.

, The present invention is an improvement in suction boxes such as employed to remove water from the paper stockcarried by the Fourdrinier wire of a. paper-making machine; and the object of the invention is to provide an improved connection between the end pieces or heads and the body of the suction box, which connection is strong, simple and secure; and also effective in maintaining a leakless joint, to the end that the desired vacuum is maintained.

In modern paper-making machines capable of producing a sheet of paper 200 inches or more in width, the suction boxes are now for the most part made of extruded metal and provided with strengthening flanges, this construction having marked advantages with respect to lightness and strength over the old forms of suction boxes heretofore employed, which are not commercially practicable in the modern machines of 200 inches or more in width, due to their lack of strength. These suction boxes are supported from the stationary rails of the Fourdrinier part of the machine by bolts or other connecting means passing through said heads or end pieces, and hence it is of primary importance that said heads should be rigidly and securely fastened to the body of the suction box.

The invention Will be better understood by reference to the accompanying drawings, illustrating one expression of the inventive idea and wherein:

Figure 1 is a perspective view of the improved suction box with the cover removed; Fig. 2 is a transverse section on the line 2 2 of Fig. 1; and Fig. 3 is an extended view of certain of the parts, showing the connecting means between one of the heads and the suction box. 1

Referring to the drawings wherein like reference numerals indicate like parts, 5 and 6 are the side walls of the upper chamber, and 7 and 8 indicate parts constituting the sides and bottom of the lower chamber.

Flanges 9 and 10 support the perforated in the upper chamber.

cover 11 that is held in place by suitable means, as two series of screws 12 and 18.

Side piece 5 is provided with a longitudinal flange 13, and side piece 6 with a similar flange 14:. These flanges act to stiffen the box and also provide gutters to catch the drippings from the edges of the coverboard 8 with corresponding flanges 19 and 20.

Preferably one longitudinal edge of a separate middle piece or bottom 21 for the upper chamber is secured between flanges 13 and 17 by suitable means, as a row of rivets 22, and the other longitudinal edge is similarly secured between flanges if and 19-by rivets 23, and preferably the seams are calkedor soldered.

The members 5, 6, 7 and 8 of the suction box are preferably of extruded composition, and the middle plate 21 is preferably of rolled sheet composition. The plate 21 is provided with a plurality of openings or perforations 24; through which the suction is applied through the perforations in cover 11; and a plurality of'braces 25 are secured to the inside of walls 5 and 6, the main function of these braces being to support the long perforated cover 11 which has a decided tendency to collapse due to the vacuum The suction is applied in any suitable manner, as by a pump (not shown) connected with the suction outlet 26 in one of the two end pieces ,or

heads 27.

An operating rod 28, provided with a handle 29, projects through said head 27,

and is connected to a cover plate 30 to which is secured a plug 31 which latter snugly fits the walls Sand 6 and is-adjustable longially at the side known as the tending side Ff the machine, which is opposite to the side where; the outlet 26 is located. Cemmunicating. withthis inlet is a priming pipe 32 which communicates with the parts of the upper chamber between head 27 and plug :31 and head. 27 and the plug 31. Said primingpipe is supported in suitable clips 33' preferably secured to plate 21 by rivets 34. The priming water in the spaces between said heads and plugs acts as a water seal, and assists in maintaining the vacuum between said plugs 31 and. 31. These suction boxes'are secured to the under side of the stationary rails of the Fourdrinier part of the machine by bolts passing through holes 35 and 36 in the heads 27 and 27. In a modern machine capable of producing paper 200 inches or more in Width, the suction boxes are necessarily very long and, at the lightest, quite heavy, though capable of being manually removed and put in place. An ordinary size suction box, of the character described, for a 200 inch machine weighs approximately 1500 pounds, and

those for machines of greater width proportionately more. It is accordingly of primary importance that the connections between the box and the heads 27 and 27 should be strong enough to bear all the strains imposed on them in practical, commercial use, and also. that this connection should be effective in maintaining a. leakless joint.

According to the present invention a block piece 37 is secured on each end of flange 13 by any suitable means, as by rivets 38passing through side piece 5, and similar blocks 39 are similarly secured on each end of flange 14 by rivets 40. Further, a. block 41 closely engages each end of the outside of part 7 of the lower chamber, being secured in. place by rivets 42,and a similar block 43 is similarly secured at each end of the outside of part 8 of the lower chamber, by rivets 44. At each end of the middle plate or dividing partition 21 is secured a rightangle piece 45, the horizontal member of which is suitably secured, and preferably riveted, to said plate 21. The vertical member of this piece 45 and these blocks 37, 39, 41 and 43 present a flush face at each end of the suction boX to which to. secure heads 27 and 27. These heads likewise present flush faces to the parts on'the body of the suction box, as shown in Fig. 3, wherein the face 46 of head 27 is shown with the various holes through which pass the means for securing the head in place. Bolts 47 (Fig. 2) pass through blocks 37 and 3.9 and through head 27" and bolts 48 through blocks 41 and-43 and through the head, bolts 47 passing through holes 49 in the head (Fig. 3) and bolts 48 through holes 50. Bolts 51 ,(Fig. 2) that: engage the right-angled membet--45 "pass into holes 52. Head 27 is secured to its end of the box in the same way. Handles 53 and 54 are provided for temporarily supporting or carrying the box.

, lVhile, for the purpose of illustration, one expression of the inventive idea has been shown and described in considerable detail, it is to be understood that the invention is not so limited but that the inventive idea is susceptible of various mechanical expressions within the limits of the appended claims.

What is claimed is 1. In a device of the character described, the combination. of a body part provided with flanges, blocks arranged on each end of said flanges, other blocks arranged beneath said flanges, means securing said blocks in place, an end piece, and means securing said end piece to said blocks.

2. In a device of the character described, the combination of a body part provided with flanges, blocks arranged on each end of said flanges, other blocks arranged beneath said flanges, means securing said blocks in place, said blocks affording a substantially flush face for the suction box, an end piece having a flush face, and means for securing said end piece and blocks together.

3. In a device ofthe character described, the combination of a body part, blocks secured to the end "thereof, an end piece, and bolts for securing said end piece to said blocks.

4. In a device of the character described, the combination of a body part, blocks secured to the end thereof and arranged to provide a substantially flush face, an end piece having a flush face, and means for securing said flush faces together.

5.- In a device of the character described, the combination of a body part provided with an upper and a lower chamber, blocks. Y

secured at the extremities of said upper chamber, other blocks, secured at the ex-- tremities of said lower chamber, ahead for each end of the suction box, and means for securing saidheads to said blocks.

6. In a device of the characterdescribed, the combination of a body part provided with an upper and a lower chamber, blocks secured at the extremities of said upper chamber, other blocks secured-at the extremities of said lower chamber, said blocks providing flush faces at the ends of said device, a head for each end of said device provided with a flush face, and means for securing the flush faces of said heads to the flush faces of said blocks.

7. In a suction box for-Fourdrinier wires, stile combination of a flanged body portion 1 formed of extruded metal, blocks secured .to the ends of said flanges, and end pieces secured tosaid blocks v a 8. In a suction box, the combination of a body portion formed of extruded metal,

blocks secured to the ends thereof the blocks at each end affording a flush face, and end pieces provided with flush faces secured to said blocks.

9. In a suction box, the combination of a body part having upper and lower chambers, blocking pieces arranged on the outside of said chambers at each end, a crosspiecc iitted'inside of said body part at each end, and end pieces secured to said blocking pieces and crosspieces.

10. In a suction box, the combination of a body part having upper and lower chambers, blocking pieces arranged on the outside of said chambers at each end, a crosspiecc fitted inside of said body part at each end, said blocking pieces and cross-pieces &

providing flush faces at the ends of the body part, and end pieces having flush'faces secured to the flush faces of said body part.

11. In a suction box, the combination of a suction box having flush faces, a head for each end having flush faces, and bolts for securing said heads in place, means associated with said heads for securing the suction box in place, and handles on said heads to lift and transport the same.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

s BENJAMIN DENVER COPPAGE.

Witnesses WM. 13. KERKAM, JAMES H. MARE. 

